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  #11  
Old 08-12-2019, 05:11 AM
Geoff Geoff is offline
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Join Date: Jul 2005
Location: Australia
Posts: 2,470
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Also agree.

Original threaded fitting size was never designed to be used with s/s, which is a harder metal; it requires more tightening torque to compress the flare for a good seal. Which could result in stripped threads, twisted threads or broken fittings.